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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

UzaScreener.A

Threat LevelLow threatDamageHighDistributionNot widespread
Common name:UzaScreener.A
Technical name:W32/UzaScreener.A.worm
Threat level:Medium
Alias:W32/Zua.worm,
Type:Worm
Effects:  

It modifies the Desktop wallpaper and displays an image, created by itself, when the computer is started. It disables the Task Manager and the configuration of the Display properties. It spreads via the shared and mapped drives.

Affected platforms:

Windows 2003/XP/2000/NT/ME/98/95

First detected on:Oct. 14, 2007
Detection updated on:Oct. 15, 2007
StatisticsNo
Proactive protection:
Yes, using TruPrevent Technologies

Brief Description 

    

UzaScreener.A is a worm that carries out several modifications in the Windows Registry, which prevent the user from carrying out the following actions:

  • Viewing the processes that are being run through the Task Manager.
  • Configuring the Display properties of the affected system, which would prevent the Desktop wallpaper from being modified.

UzaScreener.A spreads making copies of itself in the shared and mapped drives.

Visible Symptoms 

    

UzaScreener.A is easy to recognize, as it displays the following symptoms:

  • It reaches the computer in a file with the name MY_PERSONAL_DATA.EXE and the icon belonging to a folder:

  • The text (U.Z.A. O/S) is displayed next to the time in the taskbar:

  • When the computer has been restarted ten times:
    - the following image is displayed when the system is being started:



    - the following wallpaper is established: